37 lines
1.1 KiB
Ruby
37 lines
1.1 KiB
Ruby
class CleanUpFromMergeRequestDiffsAndCommits < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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class MergeRequestDiff < ActiveRecord::Base
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self.table_name = 'merge_request_diffs'
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include ::EachBatch
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end
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disable_ddl_transaction!
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def up
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Gitlab::BackgroundMigration.steal('DeserializeMergeRequestDiffsAndCommits')
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# The literal '--- []\n' value is created by the import process and treated
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# as null by the application, so we can ignore those - even if we were
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# migrating, it wouldn't create any rows.
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literal_prefix = Gitlab::Database.postgresql? ? 'E' : ''
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non_empty = "
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(st_commits IS NOT NULL AND st_commits != #{literal_prefix}'--- []\n')
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OR
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(st_diffs IS NOT NULL AND st_diffs != #{literal_prefix}'--- []\n')
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".squish
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MergeRequestDiff.where(non_empty).each_batch(of: 500) do |relation, index|
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range = relation.pluck('MIN(id)', 'MAX(id)').first
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Gitlab::BackgroundMigration::DeserializeMergeRequestDiffsAndCommits.new.perform(*range)
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end
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end
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def down
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end
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end
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